Blender MantaFlow ... no visible result!
The mantaflow branch works a bit differently than you may expect. First bake the fluid sim, then enable fluid mesh and bake the mesh. There is no visible mesh changes before baking the mesh.

You can pause the bake after a few % and start the mesh bake to see results at the beginning before finishing the bake.

There is also fluid particles that can be baked, this can give the extras like bubbles floating on the surface.